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Three favorite sites occurs infinitely often for one-dimensional simple random walk. (English) Zbl 1428.60060

Summary: For a one-dimensional simple random walk \((S_{t})\), for each time \(t\) we say a site \(x\) is a favorite site if it has the maximal local time. In this paper, we show that with probability 1 three favorite sites occurs infinitely often. Our work is inspired by B. Tóth [Ann. Probab. 29, No. 1, 484–503 (2001; Zbl 1031.60036)], and disproves a conjecture of P. Erdős and P. Révész [in: Mathematical statistics and probability theory, Proc. 6th Pannonian Symp., Bad Tatzmannsdorf/Austria 1986, Vol. B, 59–65 (1987; Zbl 0629.60081)] and of Tóth [loc. cit.].

MSC:

60G50 Sums of independent random variables; random walks
60J55 Local time and additive functionals

References:

[1] Abe, Y. (2015). Maximum and minimum of local times for two-dimensional random walk. Electron. Commun. Probab.20 22, 14 pp. · Zbl 1321.60151 · doi:10.1214/ECP.v20-3877
[2] Bass, R. F., Eisenbaum, N. and Shi, Z. (2000). The most visited sites of symmetric stable processes. Probab. Theory Related Fields116 391–404. · Zbl 0955.60073 · doi:10.1007/s004400050255
[3] Bass, R. F. and Griffin, P. S. (1985). The most visited site of Brownian motion and simple random walk. Z. Wahrsch. Verw. Gebiete70 417–436. · Zbl 0554.60076 · doi:10.1007/BF00534873
[4] Belius, D. (2013). Gumbel fluctuations for cover times in the discrete torus. Probab. Theory Related Fields157 635–689. · Zbl 1295.60053
[5] Belius, D. and Kistler, N. (2017). The subleading order of two dimensional cover times. Probab. Theory Related Fields167 461–552. · Zbl 1365.60071 · doi:10.1007/s00440-015-0689-6
[6] Chen, D., de Raphélis, L. and Hu, Y. Favorite sites of randomly biased walks on a supercritical Galton–Watson tree. Available at arXiv:1611.04497. · Zbl 1388.60148
[7] Csáki, E., Révész, P. and Shi, Z. (2000). Favourite sites, favourite values and jump sizes for random walk and Brownian motion. Bernoulli6 951–975. · Zbl 0974.60033 · doi:10.2307/3318465
[8] Csáki, E. and Shi, Z. (1998). Large favourite sites of simple random walk and the Wiener process. Electron. J. Probab.3 14, 31 pp. (electronic). · Zbl 0908.60070
[9] Dembo, A. (2005). Favorite points, cover times and fractals. In Lectures on Probability Theory and Statistics. Lecture Notes in Math.1869 1–101. Springer, Berlin. · Zbl 1102.60009
[10] Dembo, A., Peres, Y., Rosen, J. and Zeitouni, O. (2001). Thick points for planar Brownian motion and the Erdős–Taylor conjecture on random walk. Acta Math.186 239–270. · Zbl 1008.60063 · doi:10.1007/BF02401841
[11] Dembo, A., Peres, Y., Rosen, J. and Zeitouni, O. (2004). Cover times for Brownian motion and random walks in two dimensions. Ann. of Math. (2) 160 433–464. · Zbl 1068.60018
[12] Eisenbaum, N. (1997). On the most visited sites by a symmetric stable process. Probab. Theory Related Fields107 527–535. · Zbl 0883.60070 · doi:10.1007/s004400050097
[13] Eisenbaum, N. and Khoshnevisan, D. (2002). On the most visited sites of symmetric Markov processes. Stochastic Process. Appl.101 241–256. · Zbl 1075.60552 · doi:10.1016/S0304-4149(02)00128-X
[14] Erdős, P. and Révész, P. (1987). Problems and results on random walks. In Mathematical Statistics and Probability Theory, Vol. B (Bad Tatzmannsdorf, 1986) 59–65. Reidel, Dordrecht. · Zbl 0629.60081
[15] Erdős, P. and Révész, P. (1984). On the favourite points of a random walk. In Mathematical Structure—Computational Mathematics—Mathematical Modelling2 152–157. · Zbl 0593.60072
[16] Erdős, P. and Révész, P. (1991). Three problems on the random walk in \(\mathbf{Z}^{d}\). Studia Sci. Math. Hungar.26 309–320. · Zbl 0774.60036
[17] Hu, Y. and Shi, Z. (2000). The problem of the most visited site in random environment. Probab. Theory Related Fields116 273–302. · Zbl 0954.60040 · doi:10.1007/PL00008730
[18] Hu, Y. and Shi, Z. (2015). The most visited sites of biased random walks on trees. Electron. J. Probab.20 62, 14 pp. · Zbl 1321.60089
[19] Knight, F. B. (1963). Random walks and a sojourn density process of Brownian motion. Trans. Amer. Math. Soc.109 56–86. · Zbl 0119.14604 · doi:10.1090/S0002-9947-1963-0154337-6
[20] Lifshits, M. A. and Shi, Z. (2004). The escape rate of favorite sites of simple random walk and Brownian motion. Ann. Probab.32 129–152. · Zbl 1067.60072 · doi:10.1214/aop/1078415831
[21] Marcus, M. B. (2001). The most visited sites of certain Lévy processes. J. Theoret. Probab.14 867–885. · Zbl 0991.60035
[22] Okada, I. Topics and problems on favorite sites of random walks. Available at arXiv:1606.03787. · Zbl 1367.60049
[23] Shi, Z. and Tóth, B. (2000). Favourite sites of simple random walk. Period. Math. Hungar.41 237–249. Endre Csáki 65. · Zbl 1001.60081 · doi:10.1023/A:1010389026544
[24] Tóth, B. (2001). No more than three favorite sites for simple random walk. Ann. Probab.29 484–503. · Zbl 1031.60036 · doi:10.1214/aop/1008956341
[25] Tóth, B. and Werner, W. (1997). Tied favourite edges for simple random walk. Combin. Probab. Comput.6 359–369. · Zbl 0882.60070 · doi:10.1017/S096354839700309X
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